Fixes Typos under Compute Node Installation Section

Fixes typos that occured during porting of the installation guide.
Basically the network configurations were not modified as required.

Change-Id: Ie8e192d24e9b5047925e858c14dcacdb99f9698f
Closes-Bug: #1275383
install-guide: keystone minor fixes

Fix some nits in the keystone section (spacing, colons...).

Explicitely list some commands that were only described.

Change-Id: I4d83dab65a598b66a45e245004203c3370be0c89
Imported Translations from Transifex

Change-Id: I4214be22bc572c73fa88bab9541f71536c95b679
Merge "install-guide: keystone minor fixes"
Merge "Fixes Typos under Compute Node Installation Section"